contrib: Add os_akillnicklist, your bespoke GNAA eradication tool.

contrib/Makefile.in

@@ -68,6 +68,7 @@ SRCS =					\
 	$(SRCDIR)/ns_mxcheck_async.c	\
 	$(SRCDIR)/ns_ratelimitreg.c	\
 	$(SRCDIR)/on_db_save.c		\
+	$(SRCDIR)/os_akillnicklist.c	\
 	$(SRCDIR)/os_pingspam.c		\
 	$(SRCDIR)/os_testcmd.c		\
 	$(SRCDIR)/os_testproc.c		\

contrib/os_akillnicklist.c

@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 2010 William Pitcock, et al.
+ * The rights to this code are as documented under doc/LICENSE.
+ *
+ * Automatically AKILL a list of clients, given their operating parameters.
+ *
+ * Basically this builds a keyword patricia.  O(NICKLEN) lookups at the price
+ * of a longer startup process.
+ *
+ * Configuration.
+ * ==============
+ *
+ * This module adds a new block to the config file:
+ *
+ *     nicklists {
+ *         all = "/home/nenolod/atheme-production.hg4576/etc/nicklists/azn.txt";
+ *         nick = "/home/nenolod/atheme-production.hg4576/etc/nicklists/bottler-nicks.txt";
+ *         user = "/home/nenolod/atheme-production.hg4576/etc/nicklists/bottler-users.txt";
+ *         real = "/home/nenolod/atheme-production.hg4576/etc/nicklists/bottler-gecos.txt";
+ *     };
+ *
+ * You can add multiple all, nick, user and real entries.  The entries will be merged.
+ * I would also like to say: fuck you GNAA, you guys need to go play in fucking traffic.
+ * Thanks for reading my crappy docs, and have a nice day.
+ */
+
+#include "atheme.h"
+
+DECLARE_MODULE_V1
+(
+	"contrib/os_akillnicklist", false, _modinit, _moddeinit,
+	"0.1",
+	"Atheme Development Group <http://www.atheme.org>"
+);
+
+static mowgli_patricia_t *akillnicklist = NULL;
+static mowgli_patricia_t *akilluserlist = NULL;
+static mowgli_patricia_t *akillreallist = NULL;
+
+static list_t conft = {};
+
+static void
+add_contents_of_file_to_list(const char *filename, mowgli_patricia_t *list)
+{
+	char value[BUFSIZE];
+	FILE *f;
+
+	f = fopen(filename, "r");
+
+	while (fgets(value, BUFSIZE, f) != NULL)
+	{
+		strip(value);
+
+		if (!*value)
+			continue;
+
+		mowgli_patricia_add(list, value, (void *) 0x1);
+	}
+
+	fclose(f);
+}
+
+static int
+nicklist_config_handler_all(config_entry_t *entry)
+{
+	add_contents_of_file_to_list(entry->ce_vardata, akillnicklist);
+	add_contents_of_file_to_list(entry->ce_vardata, akilluserlist);
+	add_contents_of_file_to_list(entry->ce_vardata, akillreallist);
+
+	return 0;
+}
+
+static int
+nicklist_config_handler_nick(config_entry_t *entry)
+{
+	add_contents_of_file_to_list(entry->ce_vardata, akillnicklist);
+
+	return 0;
+}
+
+static int
+nicklist_config_handler_user(config_entry_t *entry)
+{
+	add_contents_of_file_to_list(entry->ce_vardata, akilluserlist);
+
+	return 0;
+}
+
+static int
+nicklist_config_handler_real(config_entry_t *entry)
+{
+	add_contents_of_file_to_list(entry->ce_vardata, akillreallist);
+
+	return 0;
+}
+
+static void
+aknl_nickhook(hook_user_nick_t *data)
+{
+	user_t *u;
+	bool doit = false;
+
+	return_if_fail(data != NULL);
+	return_if_fail(data->u != NULL);
+
+	u = data->u;
+
+	if (is_internal_client(u))
+		return;
+
+	if (is_autokline_exempt(u))
+		return;
+
+	if (mowgli_patricia_retrieve(akillnicklist, u->nick) != NULL)
+		doit = true;
+
+	if (mowgli_patricia_retrieve(akilluserlist, u->user) != NULL)
+		doit = true;
+
+	if (mowgli_patricia_retrieve(akillreallist, u->gecos) != NULL)
+		doit = true;
+
+	if (!doit)
+		return;
+
+	slog(LG_INFO, "AKNL: k-lining \2%s\2!%s@%s [%s] due to appearing to be a possible spambot", u->nick, u->user, u->host, u->gecos);
+	kline_sts("*", "*", u->host, 86400, "Possible spambot");
+}
+
+void
+_modinit(module_t *m)
+{
+	add_subblock_top_conf("NICKLISTS", &conft);
+	add_conf_item("ALL", &conft, nicklist_config_handler_all);
+	add_conf_item("NICK", &conft, nicklist_config_handler_nick);
+	add_conf_item("USER", &conft, nicklist_config_handler_user);
+	add_conf_item("REAL", &conft, nicklist_config_handler_real);
+
+	akillnicklist = mowgli_patricia_create(strcasecanon);
+	akilluserlist = mowgli_patricia_create(strcasecanon);
+	akillreallist = mowgli_patricia_create(strcasecanon);
+
+	hook_add_event("user_add");
+	hook_add_user_add(aknl_nickhook);
+	hook_add_event("user_nickchange");
+	hook_add_user_nickchange(aknl_nickhook);
+}
+
+void
+_moddeinit(void)
+{
+	hook_del_user_add(aknl_nickhook);
+	hook_del_user_nickchange(aknl_nickhook);
+
+	del_conf_item("ALL", &conft);
+	del_conf_item("NICK", &conft);
+	del_conf_item("USER", &conft);
+	del_conf_item("REAL", &conft);
+	del_top_conf("NICKLISTS");
+}